TIE EXCHANGE MACHINE AND METHOD

摘要

A machine for exchanging old ties of a railroad track for new ties comprises a machine frame supported by undercarriages for mobility along the track, a longitudinally, vertically and transversely displaceable tie exchange device connected to the machine frame for laterally pulling the old ties out of the track and laterally inserting the new ties in the track at a tie exchange position, and a ballast scarifying device for clearing ballast at the tie exchange position. According to the invention, a mobile tie transporting crane is mounted on the machine for movement along the track towards and away from the tie exchange device, and a device is arranged below the machine frame for depositing the old ties pulled out of the track by the tie exchange device and the new ties transported by the crane, the tie exchange device having a side facing the tie depositing device and the tie transporting crane comprising a vertically adjustable boom and tie gripping means affixed to the boom.